| 摘要 |
<p>A flexible elongate device (11) includes a flexible elongate tubular member (12) having proximal and distal extremities (13, 14). A flexible coil spring (56) is provided having proximal and distal extremities (57, 58). The proximal extremity of the coil spring is secured to the distal extremity of the flexible elongate tubular member. A rounded tip (61) is secured to the distal extremity of the coil spring. A flexible elongate element (62) having proximal and distal extremities (63, 64) is disposed within the coil spring and extends longitudinally of the coil spring. The distal extremity of the flexible elongate element is secured to the rounded tip. A vibrator (76) is secured to the proximal extremity of the flexible elongate element for imparting vibration motion to the flexible elongate element to cause vibratory impact motion of the rounded tip in a direction longitudinal axis of the flexible elongate element.</p> |
